Nut actuated spider type tire bead loosener



Sept. 1, 1953- F. A. MORGAN NUT ACTUATED SPIDER TYPE TIRE BEAD LOOSENER 2 Sheets-Sheet 1 Filed Sept. 27, 1951 INVENTOR Fray 72 I511. fl fo yan ATTORNEY 2 Sheets-Sheet 2 l NVENTOR ATTORNEY.

F. A. MORGAN NUT ACTUATED SPIDER TYPE TIRE BEAD LOOSENER Sept. 1, 1953 Filed Sept. 27, 1951 Patented Sept. 1, 1953 s'ra'rss PATENT orric NUT ACTUATED SPIDER TYPE TIRE BEAD LOOSENER 2 Claims.

This invention relates to certain new and use- .ful improvements in nut actuated spider type tire bead looseners.

When removing tires from Wheels, it is usually iound that the tire beads have become so tightly stuck to the rim that they must be forcibly broken loose. To accomplish this, the wheel and tire are usually laid upon the ground or floor the service station attendant or garage workman stands on the tire and with his heels attempts to break the uppermost bead loose. If this fails, the chances are that he will beat upon tire, near the rim flanges, with a hammer. If this fails also, he will probably try driving a "Ire tool or the like between the bead and the rim flange. Such procedures are not only arduous and time-consuming but are often injurious to the tire.

It is the principal object of this invention to provide a novel device'whereby the beads may be quickly and easily broken loose from the rim with no danger of damage to the tire.

Another object is to provide a bead loosening device quickly and easily adjustable for use on tires of various sizes.

A further object of the invention is to provide a hand-operated device in which the necessary force produced by a nut threaded upon a said nut having an operating handle.

A still further object of the invention is to provide a ratchet connection between the nut and handle for convenience of operation.

Yet another object of the invention is to provide a simple device which may be sold at a reasonable price, yet will give years of service at any service station or garage.

With the above and other objects in view that will become apparent as the nature of the invention is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings, and claimed.

In the drawings:

Fig. 1 is a side elevation of the invention,

2 is a top plan view, and

Fig. is a vertical sectional view on line 3--3 of 2, showing the device in use.

A use ii is provided to be bolted or otherwise secure-c. to floor or to a work-bench or the like. This base is provided with a horizontal with alined vertical bores 9 and I0 through which the lower portion of a vertical bolt or standard I I extends, said bolt or standard being so connected with the base 5 that it cannot rotate and cannot move upwardly with respect to said base. For this purpose, a square head I 2 has been shown on the bolt or standard H, and a square socket I3 has been provided in the base 5, said socket receiving said head.

Above the wheel support 6, there is a spider I 4, said spider comprising a hub I5, and arms I6 radiating from said hub. The hub I5 is formed with a vertical bore II loosely receiving the upper portion of the bolt or standard I I, and a supporting spring I8 is provided for said hub. This spring rests upon the wheel support 6 and loosely surrounds the bolt or standard II. A nut I9 rests upon the hub I5 and engages a screw thread 2!! on the bolt or standard II, whereby tightening of this nut will depress the entire spider I4 and loosening of said nut will allow the spring It to raise said spider.

The nut I9 is provided with a base flange 2| and with peripheral teeth 22 above said flange. The head 23 of a ratchet handle 24 surrounds the nut I9 and rests on the flange 2|, and the springpressed ratchet or pawl 25 of said head engages the teeth 22 for operating the nut I9. The ratchet handle is used in the position shown for tightening the nut and is used in an inverted position for loosening said nut.

Each of spider arms I 6 is formed with a longitudinal slot 25 which opens through its upper and lower sides, the lower side of each arm is provided with transverse grooves 21, and the upper side of each arm is provided with similar grooves 28.

Vertical thrust members 29 are provided to transmit downward thrust from the spider Hi to the tire 3B of a wheel 3I to break the tire beads 32 loose from the wheel rim 33. Each thrust member 29 comprises a vertical shank 34 having a presser-ioot 35 at its lower end, said presserfoot being preferably of the fishtail form shown most clearly in Fig. 1. The shank 34 is provided with lateral upwardly facing shoulders 36 and with a cross-pin 3'! above said shoulders. The shanks 34 extend through the slots 26 of the spider arms It, and the cross-pin 3! may seat in any of the grooves 28 to normally suspend the thrust members 29 from the spider It as seen in Fig. 1. When a tire is being loosened, however, the shoulders 36 are seated in the proper sets of grooves 21, according to the size of the tire, as will be clear from Fig. 3.

In using the device, the spider l4 and the thrust devices 29 are removed as a unit, after removing the nut IS. The wheel 3| is then laid upon the support 16 and approximately centered. The spider l4 and thrust members 29 are then replaced and supported by the spring i8, and the nut I9 is reapplied. The thrust members 29 are now adjusted along the slots 26 until they will hang (with the cross-pins if in the grooves 28) in such position that the lower ends of the presser-feet 35 will be as near as possible to their proper positions. Then, the spider I4 is depressed by meansof the nut I 9- until the shoulders 36 engage certain of thegrooves 27. At this stage, the lower ends of the presser-feet 35 are properly placed against" the edge of the rim flange. asseen in. Fig. 3. The nut I9 is then forcibly turned down by means of the ratchet handle 24, causing the upper bead 32 to break loose from the rim. Should the-beadbreak loose only under the feet 35 and not between them, it will of. coursebe necessary to loosen the nut I9, turn thewheel somewhat. and: repeat the operation. After loosening the uppermost bead, the wheel may be: inverted and: the. device then operated to similarly break the other bead loose.

From. the above detailed description of the invention, it is believed that the construction, use, and operation thereof will at oncebe apparent, and while there. is herein shown and described. the preferred embodiment of the invention, it is nevertheless to be understood that minor changes may be made therein without departing from the: spirit and scope of the invention as claimed.

I claim:

1'. A tire bead loosener including a: base, a standard: projecting; upwardly from the center of the base and non-rotatably connected thereto, a. rotary wheel centersupportmounted on said standard. and: resting on. saidv base, a spider having a hub slidably mounted on the standard in spaced relation to the said support, a nut threaded on the upper end of said standard, a coiled compression spring surrounding the standard between and seated against said support and hub and holding said hub yieldably against said nut, spider arms radiating from said hub, and thrust members supported by and extending downwardly frorw said arms.

2. A tire bead" loosener including a base, a standard projecting upwardly from the center of the base and non-rotatably connected thereto; a rotary wheel center support mounted on said standard and" resting on said base, a spider having a hub slidably mounted on the standard in" spaced relation to the said support, a nut threaded onthe upper end of said standard, a coiled compression spring surrounding the standard between and seated against said support and hub and holding said hub yieldably against said: nut, spider arms: extendingv radially from said: hum said. arms. being each taperingly decreased in vertical dimension. from. the hub outwardly said arms having longitudinal slots extending vertically therethroughv and spaced:v notches in; their upper and lower faces, and thrustmembers having shanks extending through said: slots and providedv with notch.- engaging; meansbelowand above the arms.

FRANK A. MORGAN.

References Citedin the file of this patent U-NITED STATES P A-TENTS Number Name Date 582,013' Ellebrecht' May 4, 1897 1,489,151 Prossen Apr. 1, 1924 2,024,891 Spuler et a1. Dec. 17'; 1935 2,464,638 Falkner Mar; 15, 1949 21495118 McColli'ster Jan. 17, 1950 2,545,157 McCrary" Mar. 13, 1951 

